[unity] Allow skeleton data to load without atlases.

spine-unity/Assets/spine-unity/Asset Types/RegionlessAttachmentLoader.cs

@@ -0,0 +1,84 @@
+/******************************************************************************
+ * Spine Runtimes Software License v2.5
+ *
+ * Copyright (c) 2013-2016, Esoteric Software
+ * All rights reserved.
+ *
+ * You are granted a perpetual, non-exclusive, non-sublicensable, and
+ * non-transferable license to use, install, execute, and perform the Spine
+ * Runtimes software and derivative works solely for personal or internal
+ * use. Without the written permission of Esoteric Software (see Section 2 of
+ * the Spine Software License Agreement), you may not (a) modify, translate,
+ * adapt, or develop new applications using the Spine Runtimes or otherwise
+ * create derivative works or improvements of the Spine Runtimes or (b) remove,
+ * delete, alter, or obscure any trademarks or any copyright, trademark, patent,
+ * or other intellectual property or proprietary rights notices on or in the
+ * Software, including any copy thereof. Redistributions in binary or source
+ * form must include this license and terms.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS INTERRUPTION, OR LOSS OF
+ * USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+using System;
+using UnityEngine;
+
+namespace Spine.Unity {
+
+	public class RegionlessAttachmentLoader : AttachmentLoader {
+
+		static AtlasRegion emptyRegion;
+		static AtlasRegion EmptyRegion {
+			get {
+				if (emptyRegion == null) {
+					emptyRegion = new AtlasRegion {
+						name = "Empty AtlasRegion",
+						page = new AtlasPage {
+							name = "Empty AtlasPage",
+							rendererObject = new Material(Shader.Find("Spine/Special/HiddenPass")) { name = "NoRender Material" }
+						}
+					};
+				}
+				return emptyRegion;
+			}
+		}
+
+		public RegionAttachment NewRegionAttachment (Skin skin, string name, string path) {
+			RegionAttachment attachment = new RegionAttachment(name) {
+				RendererObject = EmptyRegion
+			};
+			return attachment;
+		}
+
+		public MeshAttachment NewMeshAttachment (Skin skin, string name, string path) {
+			MeshAttachment attachment = new MeshAttachment(name) {
+				RendererObject = EmptyRegion
+			};
+			return attachment;
+		}
+
+		public BoundingBoxAttachment NewBoundingBoxAttachment (Skin skin, string name) {
+			return new BoundingBoxAttachment(name);
+		}
+
+		public PathAttachment NewPathAttachment (Skin skin, string name) {
+			return new PathAttachment(name);
+		}
+
+		public PointAttachment NewPointAttachment (Skin skin, string name) {
+			return new PointAttachment(name);
+		}
+
+		public ClippingAttachment NewClippingAttachment (Skin skin, string name) {
+			return new ClippingAttachment(name);
+		}
+	}
+}

spine-unity/Assets/spine-unity/Asset Types/RegionlessAttachmentLoader.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 15f0f78b87720c047a320c5e0e3f91b7
+timeCreated: 1520505662
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

spine-unity/Assets/spine-unity/Asset Types/SkeletonDataAsset.cs

@@ -126,7 +126,7 @@ namespace Spine.Unity {
 			Atlas[] atlasArray = this.GetAtlasArray();
 
 			#if !SPINE_TK2D
-			attachmentLoader = new AtlasAttachmentLoader(atlasArray);
+			attachmentLoader = (atlasArray.Length == 0) ? (AttachmentLoader)new RegionlessAttachmentLoader() : (AttachmentLoader)new AtlasAttachmentLoader(atlasArray);
 			skeletonDataScale = scale;
 			#else
 			if (spriteCollection != null) {

spine-unity/Assets/spine-unity/Editor/SkeletonDataAssetInspector.cs

@@ -274,6 +274,9 @@ namespace Spine.Unity.Editor {
 			EditorGUILayout.LabelField("spine-tk2d", EditorStyles.boldLabel);
 			EditorGUILayout.PropertyField(spriteCollection, true);
 			#endif
+
+			if (atlasAssets.arraySize == 0)
+				EditorGUILayout.HelpBox("AtlasAssets array is empty. Skeleton's attachments will load without being mapped to images.", MessageType.Info);
 		}
 
 		void HandleAtlasAssetsNulls () {
@@ -485,7 +488,7 @@ namespace Spine.Unity.Editor {
 		}
 
 		void DrawWarningList () {
-			foreach (var line in warnings)
+			foreach (string line in warnings)
 				EditorGUILayout.LabelField(SpineInspectorUtility.TempContent(line, Icons.warning));
 		}
 
@@ -525,25 +528,30 @@ namespace Spine.Unity.Editor {
 						if (detectedNullAtlasEntry) {
 							warnings.Add("AtlasAsset elements should not be null.");
 						} else {
-							var missingPaths = SpineEditorUtilities.GetRequiredAtlasRegions(AssetDatabase.GetAssetPath(skeletonJSON.objectReferenceValue));
-
-							foreach (var atlas in atlasList) {
-								for (int i = 0; i < missingPaths.Count; i++) {
-									if (atlas.FindRegion(missingPaths[i]) != null) {
-										missingPaths.RemoveAt(i);
-										i--;
+							List<string> missingPaths = null;
+							if (atlasAssets.arraySize > 0) {
+								missingPaths = SpineEditorUtilities.GetRequiredAtlasRegions(AssetDatabase.GetAssetPath(skeletonJSON.objectReferenceValue));
+
+								foreach (var atlas in atlasList) {
+									for (int i = 0; i < missingPaths.Count; i++) {
+										if (atlas.FindRegion(missingPaths[i]) != null) {
+											missingPaths.RemoveAt(i);
+											i--;
+										}
 									}
 								}
-							}
 
-							#if SPINE_TK2D
-							if (missingPaths.Count > 0)
-								warnings.Add("Missing regions. SkeletonDataAsset requires tk2DSpriteCollectionData or Spine AtlasAssets.");
-							#endif
-
-							foreach (var str in missingPaths)
-								warnings.Add("Missing Region: '" + str + "'");
+								#if SPINE_TK2D
+								if (missingPaths.Count > 0)
+									warnings.Add("Missing regions. SkeletonDataAsset requires tk2DSpriteCollectionData or Spine AtlasAssets.");
+								#endif
+							}
 
+							if (missingPaths != null) {
+								foreach (string str in missingPaths)
+									warnings.Add("Missing Region: '" + str + "'");
+							}
+							
 						}
 					}
 
@@ -629,7 +637,10 @@ namespace Spine.Unity.Editor {
 		PreviewRenderUtility previewRenderUtility;
 		Camera PreviewUtilityCamera {
 			get {
-				if (previewRenderUtility == null) return null;
+				if (previewRenderUtility == null) {
+
+					return null;
+				}
 
 				#if UNITY_2017_1_OR_NEWER
 				return previewRenderUtility.camera;
@@ -770,7 +781,7 @@ namespace Spine.Unity.Editor {
 					skeleton.SetToSetupPose();
 					animationState.SetAnimation(0, targetAnimation, loop);
 				} else {					
-					var sameAnimation = (currentTrack.Animation == targetAnimation);
+					bool sameAnimation = (currentTrack.Animation == targetAnimation);
 					if (sameAnimation) {
 						currentTrack.TimeScale = (currentTrack.TimeScale == 0) ? 1f : 0f; // pause/play
 					} else {
@@ -974,18 +985,19 @@ namespace Spine.Unity.Editor {
 
 				for (int i = 0; i < currentAnimationEvents.Count; i++) {
 					float fr = currentAnimationEventTimes[i];
-					var evRect = new Rect(barRect);
-					evRect.x = Mathf.Clamp(((fr / t.Animation.Duration) * width) - (Icons.userEvent.width / 2), barRect.x, float.MaxValue);
-					evRect.width = Icons.userEvent.width;
-					evRect.height = Icons.userEvent.height;
-					evRect.y += Icons.userEvent.height;
+					var evRect = new Rect(barRect) {
+						x = Mathf.Clamp(((fr / t.Animation.Duration) * width) - (Icons.userEvent.width / 2), barRect.x, float.MaxValue),
+						y = barRect.y + Icons.userEvent.height,
+						width = Icons.userEvent.width,
+						height = Icons.userEvent.height
+					};
 					GUI.DrawTexture(evRect, Icons.userEvent);
 
 					Event ev = Event.current;
 					if (ev.type == EventType.Repaint) {
 						if (evRect.Contains(ev.mousePosition)) {
-							Rect tooltipRect = new Rect(evRect);
 							GUIStyle tooltipStyle = EditorStyles.helpBox;
+							Rect tooltipRect = new Rect(evRect);
 							tooltipRect.width = tooltipStyle.CalcSize(new GUIContent(currentAnimationEvents[i].Data.Name)).x;
 							tooltipRect.y -= 4;
 							tooltipRect.x += 4;